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cognitive neurology

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https://www.readbyqxmd.com/read/28220928/malt-combined-motor-and-language-therapy-tool-for-brain-injury-patients-using-kinect
#1
Maitreyee Wairagkar, Rachel McCrindle, Holly Robson, Lotte Meteyard, Malcom Sperrin, Andy Smith, Moyra Pugh
BACKGROUND: The functional connectivity and structural proximity of elements of the language and motor systems result in frequent co-morbidity post brain injury. Although rehabilitation services are becoming increasingly multidisciplinary and "integrated", treatment for language and motor functions often occurs in isolation. Thus, behavioural therapies which promote neural reorganisation do not reflect the high intersystem connectivity of the neurologically intact brain. As such, there is a pressing need for rehabilitation tools which better reflect and target the impaired cognitive networks...
February 21, 2017: Methods of Information in Medicine
https://www.readbyqxmd.com/read/28217440/rapidly-progressive-cognitive-impairment-with-neuropsychiatric-symptoms-as-the-initial-manifestation-of-status-epilepticus
#2
Jorge A Mutis, Jesús H Rodríguez, Mauricio O Nava-Mesa
The purpose of this article is to describe the clinical and electroencephalographic features of patients diagnosed with non-convulsive status epilepticus (NCSE) with uncommon cognitive and behavioral involvement. We present two cases with sub-acute cognitive impairment and neuropsychiatric disorders (including anxiety and transient behavioral changes) as their first manifestation of NCSE. A neuropsychological profile demonstrated executive dysfunction. In addition, the neurological examination revealed automatisms and 24-hour video EEG showed epileptiform activity...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28217160/primary-angiitis-of-the-central-nervous-system-a-rare-and-reversible-cause-of-childhood-stroke
#3
Aashima Dabas, Sangeeta Yadav
Childhood primary angiitis of the central nervous system (cPACNS) is a rare and a potentially fatal cause of childhood stroke. The disease poses a diagnostic dilemma for the clinicians due to overlapping and varied clinical manifestations such as headache, focal acute neurological deficits, cognitive impairment, or encephalopathy. We report a young boy who presented with low-grade fever and headache but rapidly progressed to develop acute encephalopathy and quadriparesis with multiple cranial nerve palsies, masquerading as acute disseminated encephalomyelitis...
October 2016: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28217021/central-pontine-myelinolysis-and-localized-fluorodeoxyglucose-uptake-seen-on-18-f-fdg-pet-ct
#4
Frederik Rønne, Peer Carsten Tfelt-Hansen, Lene Rørdam
Case report describing the finding of central pontine myelinolysis (CPM) using combined fluorine-18 ( (18)F)-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT). The patient was a known alcoholic who, during admission was under treatment for hyponatremia, showed a significant decline in both motor and cognitive function. Combined (18)F-FDG PET/CT showed localized FDG uptake in the pons, consistent with the finding of CPM observed on magnetic resonance imaging (MRI). CPM is a demyelinating lesion of the pons, resulting in several neurological symptoms...
January 2017: World Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28216256/kleine-levin-syndrome
#5
REVIEW
Olufunke Afolabi-Brown, Thornton B A Mason
Kleine-Levin syndrome (KLS) is a rare disorder characterized by discrete episodes of hypersomnia associated with cognitive and behavioural abnormalities, as well as normal alertness and function between episodes. The prevalence of KLS may be underestimated as it is often misdiagnosed and managed as another sleep disorder, neurological disorder or psychiatric condition. KLS is more typically seen in adolescence than at other ages, and is more common in males than in females. There are currently neither standard biomarkers nor specific imaging study findings, making the diagnosis of KLS a challenge...
December 23, 2016: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/28215911/conditions-associated-with-rem-sleep-behaviour-disorder-description-of-a-hospital-series
#6
M J Abenza Abildúa, A Miralles Martinez, F J Arpa Gutiérrez, V Lores Gutiérrez, C Algarra Lucas, C Jimeno Montero, B Sánchez García, M Mata Álvarez-Santullano, C Borrue Fernández, G Cordero Martín, G Gutiérrez Cueto, M D Torrecillas Narváez, I Thuissard Vasallo, A Gómez Aceña
INTRODUCTION: REM sleep behaviour disorder (RBD) is characterised by violent behaviours (screaming, kicking, vivid dreams) during REM sleep. It has a prevalence of 1% to 2% of the general population and is especially frequent in men and the population older than 60. In the last decade, RBD has been suggested to be a prodrome of neurodegenerative disease. We analysed associated neurological diseases and responses to drug treatment in 33 patients with RBD treated in the multidisciplinary sleep disorders unit at Hospital Infanta Sofía...
February 16, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28214540/cognitive-performance-of-male-and-female-c57bl-6j-mice-after-repetitive-concussive-brain-injuries
#7
Alexander G Velosky, Laura B Tucker, Amanda H Fu, Jiong Liu, Joseph T McCabe
In contact sports, repetitive concussive brain injury (rCBI) is the prevalent form of head injury seen in athletes. The need for effective treatment is urgent as rCBI has been associated with a host of cognitive, behavioral and neurological complaints. There has been a growing trend in the use of female animals in pre-clinical research, but few studies have investigated possible sex differences following rCBI. The goal of the current study was to determine any differences between male and female C57BL/6J mice on assessments of learning and memory after repetitive concussive injury...
February 15, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28214048/psychosocial-and-behavioral-functioning-and-their-relationship-to-seizure-timing-in-children-with-benign-epilepsy-with-centrotemporal-spikes
#8
Gonca Bektaş, Uğur Tekin, Edibe Pembegül Yıldız, Tuğçe Aksu Uzunhan, Burak Tatlı, Nur Aydınlı, Mine Çalışkan, Meral Özmen
BACKGROUND: Psychosocial and behavioral problems have been reported in children with benign epilepsy with centrotemporal spikes (BECTS). Distinctive features of typical BECTS associated with cognitive and behavioral problems have not clearly been defined. PURPOSE: We aimed to identify psychosocial and behavioral functioning and their relationship to seizure timing in BECTS. METHODS: Consecutive patients with BECTS were recruited from the pediatric neurology outpatient clinic between May 2015 and May 2016...
February 14, 2017: Brain & Development
https://www.readbyqxmd.com/read/28212850/human-astrocytes-in-the-diseased-brain
#9
Elena Dossi, Flora Vasile, Nathalie Rouach
Astrocytes are key active elements of the brain that contribute to information processing. They not only provide neurons with metabolic and structural support, but also regulate neurogenesis and brain wiring. Furthermore, astrocytes modulate synaptic activity and plasticity in part by controlling the extracellular space volume, as well as ion and neurotransmitter homeostasis. These findings, together with the discovery that human astrocytes display contrasting characteristics with their rodent counterparts, point to a role for astrocytes in higher cognitive functions...
February 13, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28211988/intrathecal-enzyme-replacement-therapy-reverses-cognitive-decline-in-mucopolysaccharidosis-type-i
#10
Igor Nestrasil, Elsa Shapiro, Alena Svatkova, Patricia Dickson, Agnes Chen, Amy Wakumoto, Alia Ahmed, Edward Stehel, Sarah McNeil, Curtis Gravance, Elizabeth Maher
Mucopolysaccharidosis type I (MPS I) is an inherited lysosomal storage disease that seriously affects the brain. Severity of neurocognitive symptoms in attenuated MPS subtype (MPS IA) broadly varies partially, due to restricted permeability of blood-brain barrier (BBB) which limits treatment effects of intravenously applied α-L-iduronidase (rhIDU) enzyme. Intrathecal (IT) rhIDU application as a possible solution to circumvent BBB improved brain outcomes in canine models; therefore, our study quantifies effects of IT rhIDU on brain structure and function in an MPS IA patient with previous progressive cognitive decline...
March 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28211814/are-major-dementias-triggered-by-poor-blood-flow-to-the-brain-theoretical-considerations
#11
Jack C de la Torre
There is growing evidence that chronic brain hypoperfusion plays a central role in the development of Alzheimer's disease (AD) long before dyscognitive symptoms or amyloid-β accumulation in the brain appear. This commentary proposes that dementia with Lewy bodies (DLB), frontotemporal dementia (FTD), and Creutzfeldt-Jakob disease (CJD) may also develop from chronic brain hypoperfusion following a similar but not identical neurometabolic breakdown as AD. The argument to support this conclusion is that chronic brain hypoperfusion, which is found at the early stages of the three dementias reviewed here, will reduce oxygen delivery and lower oxidative phosphorylation promoting a steady decline in the synthesis of the cell energy fuel adenosine triphosphate (ATP)...
February 15, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28209774/methyl-donor-supplementation-alters-cognitive-performance-and-motivation-in-female-offspring-from-high-fat-diet-fed-dams
#12
Sarah E McKee, Nicola M Grissom, Christopher T Herdt, Teresa M Reyes
During gestation, fetal nutrition is entirely dependent on maternal diet. Maternal consumption of excess fat during pregnancy has been linked to an increased risk of neurologic disorders in offspring, including attention deficit/hyperactivity disorder, autism, and schizophrenia. In a mouse model, high-fat diet (HFD)-fed offspring have cognitive and executive function deficits as well as whole-genome DNA and promoter-specific hypomethylation in multiple brain regions. Dietary methyl donor supplementation during pregnancy or adulthood has been used to alter DNA methylation and behavior...
February 16, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28207863/identification-of-age-dependent-motor-and-neuropsychological-behavioural-abnormalities-in-a-mouse-model-of-mucopolysaccharidosis-type-ii
#13
Hélène F E Gleitz, Claire O'Leary, Rebecca J Holley, Brian W Bigger
Severe mucopolysaccharidosis type II (MPS II) is a progressive lysosomal storage disease caused by mutations in the IDS gene, leading to a deficiency in the iduronate-2-sulfatase enzyme that is involved in heparan sulphate and dermatan sulphate catabolism. In constitutive form, MPS II is a multi-system disease characterised by progressive neurocognitive decline, severe skeletal abnormalities and hepatosplenomegaly. Although enzyme replacement therapy has been approved for treatment of peripheral organs, no therapy effectively treats the cognitive symptoms of the disease and novel therapies are in development to remediate this...
2017: PloS One
https://www.readbyqxmd.com/read/28207168/design-and-rationale-of-the-ebbinghaus-trial-a-phase-3-double-blind-placebo-controlled-multicenter-study-to-assess-the-effect-of-evolocumab-on-cognitive-function-in-patients-with-clinically-evident-cardiovascular-disease-and-receiving-statin-background-lipid
#14
Robert P Giugliano, Francois Mach, Kenton Zavitz, Christopher Kurtz, Jingjing Schneider, Huei Wang, Anthony Keech, Terje R Pedersen, Marc S Sabatine, Peter S Sever, Narimon Honarpour, Scott M Wasserman, Brian R Ott
Some observational studies raised concern that statins may cause memory impairment, leading to a US Food and Drug Administration warning. Similar questions were raised regarding proprotein convertase subtilisin/kexin-type 9 inhibitors (PCSK9i) and neurocognitive function. No prospectively designed study has evaluated the relationship between long-term PCSK9i use and cognition changes. Patients with prior cardiovascular disease treated with maximally tolerated statin enrolled in FOURIER (the randomized, double-blind, placebo-controlled cardiovascular outcome study of the PCSK9i evolocumab) could participate in this prospective assessment of cognitive function (EBBINGHAUS)...
February 16, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28206827/validity-of-the-symbol-digit-modalities-test-as-a-cognition-performance-outcome-measure-for-multiple-sclerosis
#15
Ralph Hb Benedict, John DeLuca, Glenn Phillips, Nicholas LaRocca, Lynn D Hudson, Richard Rudick
Cognitive and motor performance measures are commonly employed in multiple sclerosis (MS) research, particularly when the purpose is to determine the efficacy of treatment. The increasing focus of new therapies on slowing progression or reversing neurological disability makes the utilization of sensitive, reproducible, and valid measures essential. Processing speed is a basic elemental cognitive function that likely influences downstream processes such as memory. The Multiple Sclerosis Outcome Assessments Consortium (MSOAC) includes representatives from advocacy organizations, Food and Drug Administration (FDA), European Medicines Agency (EMA), National Institute of Neurological Disorders and Stroke (NINDS), academic institutions, and industry partners along with persons living with MS...
February 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28205591/protective-effect-of-17%C3%AE-estradiol-upon-hippocampal-spine-density-and-cognitive-function-in-an-animal-model-of-vascular-dementia
#16
Ying Zhu, Quanguang Zhang, Wenli Zhang, Ning Li, Yongxin Dai, Jingyi Tu, Fang Yang, Darrell W Brann, Ruimin Wang
The current study examined whether the steroid hormone, 17β-estradiol (E2) can exert long-lasting beneficial effects upon axonal health, synaptic plasticity, dementia-related amyloid-beta (Aβ) protein expression, and hippocampal-dependent cognitive function in an animal model of chronic cerebral hypoperfusion and vascular dementia (VaD). Chronic cerebral hypoperfusion and VaD was induced by bilateral common carotid artery occlusion (BCCAO) in adult male Sprague Dawley rats. Low dose E2 administered for the first 3-months after BCCAO exerted long-lasting beneficial effects, including significant neuroprotection of hippocampal CA1 neurons and preservation of hippocampal-dependent cognitive function when examined at 6-months after BCCAO...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28202615/il-13-mediated-regulation-of-learning-and-memory
#17
Tiroyaone M Brombacher, Justin K Nono, Keisha S De Gouveia, Nokuthula Makena, Matthew Darby, Jacqueline Womersley, Ousman Tamgue, Frank Brombacher
The role of proinflammatory cytokines in cognitive function has been investigated with both beneficial and possible detrimental effects, depending on the cytokine. More recently, the type 2 IL-4 has been demonstrated to play a role in cognition. In this study, using the Morris water maze task, we demonstrate that IL-13-deficient mice are significantly impaired in working memory as well as attenuated reference memory, both functions essential for effective complex learning. During the learning process, wild-type mice increased the number of CD4(+) T cells in the meninges and production of IL-13, whereas neither Morris water maze-trained IL-4 nor trained IL-13-deficient mice were able to increase CD4(+) T cells in the meninges...
February 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28202411/dopamine-and-dopamine-receptor-d1-associated-with-decreased-social-interaction
#18
Qiang Liu, Jieyun Shi, Rongfei Lin, Tieqiao Wen
Deficits in social interaction are hallmarks of neurological and psychiatric disorders. However, its underlying mechanism is still unclear. Here, we show that the loss of dendritic cell factor 1 (Dcf1) in the nervous system of mice induces social interaction deficiency, autism-like behaviour, and influences social interaction via the dopamine system. Dopamine receptor D1 agonist rescues this social cognition phenotype, and improves short-term plasticity. Together, this study presents a new genetic mechanism that affects social interaction and may provide a new way to improve positive social interaction and treat autism spectrum disorders...
February 13, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28202372/gut-microbiota-implications-in-parkinson-s-disease
#19
REVIEW
Arun Parashar, Malairaman Udayabanu
Gut microbiota (GM) can influence various neurological outcomes, like cognition, learning, and memory. Commensal GM modulates brain development and behavior and has been implicated in several neurological disorders like Alzheimer's disease, multiple sclerosis, amyotrophic lateral sclerosis, anxiety, stress and much more. A recent study has shown that Parkinson's disease patients suffer from GM dysbiosis, but whether it is a cause or an effect is yet to be understood. In this review, we try to connect the dots between GM and PD pathology using direct and indirect evidence...
February 7, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28199192/convergence-of-neurotransmissions-at-synapse-on-ieg-regulation-in-nucleus
#20
Mamoru Fukuchi, Masaaki Tsuda
There is no doubt that synaptic activity-regulated expression of immediate early genes (IEGs) contributes to long-lasting changes in neural functions, including learning and memory. Consequently, dysregulation of IEG expression has been involved in the conditions of neural and psychiatric disorders and cognitive dysfunction. This has mainly been demonstrated using genetically modified animal models and neuropharmacological analyses. The regulatory mechanisms of IEG expression have been investigated recently and have re-emphasized the role of IEG expression in plasticity-related processes as well as elucidating molecular mechanisms and drug targets for neurological and psychiatric disorders...
March 1, 2017: Frontiers in Bioscience (Landmark Edition)
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